This paper reviews shearography and its applications for testing of aircraft composite structures and honeycomb-based specimen. Shearography is a laser-based interferometry in conjunction with the digital imaging processing technique for full-field measurement of surface deformation. A new highly mobile inspection method has been introduced into the world of in service inspection for maintenance of aircrafts and components under rough industrial conditions. It could be validated, that if optimized, shearography can deal with harsh environmental conditions, can be used really under daylight conditions and still can give precise indications of flaws in a wide variety of inspection situations. The system was demonstrated under real and unusual rough conditions and still showed a great potential to speed up inspection work. New data processing added new possibilities to work with the results, especially to process them with standard software and to give new opportunities to evaluate the data. With the described work a new milestone was set for the acceptance of optical testing in real aircraft maintenance.
Studies on digital shearography for testing of aircraft composite structures and honeycomb-based specimen
Untersuchungen zur digitalen Interferometrie zur Prüfung von Luftfahrt-Verbundstrukturen und Komponenten auf der Grundlage von Wabenstrukturen
2008
5 Seiten, 5 Bilder, 3 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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